Index: firmware/App/Common.h
===================================================================
diff -u -r316e7117180362d54af53818822694c4f936e550 -r90ff6d5060b3f679d17fada9057e4dcecdecae9c
--- firmware/App/Common.h	(.../Common.h)	(revision 316e7117180362d54af53818822694c4f936e550)
+++ firmware/App/Common.h	(.../Common.h)	(revision 90ff6d5060b3f679d17fada9057e4dcecdecae9c)
@@ -89,7 +89,10 @@
 #define MS_PER_SECOND                   1000
 #define SEC_PER_MIN                     60
 #define FRACTION_TO_PERCENT_FACTOR      100.0
+#define ZERO                            0
+#define MIN_PER_HOUR                    60
 
+
 // **** Common Macros ****
 
 #define FLOAT_TO_INT_WITH_ROUND(f)      ((f) < 0.0 ? (S32)((f) - FLOAT_TO_INT_ROUNDUP_OFFSET) : (S32)((f) + FLOAT_TO_INT_ROUNDUP_OFFSET))